RFR: 8254129: IR Test Framework to support regex-based matching on the IR in JTreg compiler tests [v2]

[Christian Hagedorn]

On Mon, 19 Apr 2021 15:37:49 GMT, Igor Ignatyev <iignatyev at openjdk.org> wrote:

>> test/lib/jdk/test/lib/hotspot/ir_framework/AbstractInfo.java line 41:
>> 
>>> 39:  */
>>> 40: abstract public class AbstractInfo {
>>> 41:     private static final Random random = new Random();
>> 
>> you shouldn't use Random w/o predefined seed as it might make it harder to reproduce, please consider using `jdk.test.lib.Utils.getRandomInstance` or `jdk.test.lib.RandomFactory.getRandom` here
>
> I've also noticed that you use `Collections::shuffle` in `TestFrameworkExecution` w/o passing a reproducible rng.

Fixed that, too.

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PR: https://git.openjdk.java.net/jdk/pull/3508